CN104854917A

CN104854917A - Increased power savings through collaborative search

Info

Publication number: CN104854917A
Application number: CN201380065730.3A
Authority: CN
Inventors: C·M·波利塞泰; D·马尼; U·K·潘迪; C·斯里尼瓦桑
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2012-12-18
Filing date: 2013-11-07
Publication date: 2015-08-19
Also published as: EP2936882A1; WO2014099168A1; US9380622B2; JP2016500496A; US20140169244A1

Abstract

This disclosure provides a method and a first wireless apparatus for wirelessly communicating with a second wireless apparatus. In one implementation, the first wireless apparatus (804c) comprises a memory unit configured to store communication information associated with communicating on at least one channel of a wireless network. The apparatus further comprises a processing system that is configured to establish communications with the second wireless apparatus (804a) via a communication link (806c), to retrieve the communication information from the memory unit, and to provide at least a portion (808) of the communication information to the second wireless apparatus. To save search time and battery power, the apparatuses may be coordinated to scan different channels, bands and/or sub-bands. After scanning, the apparatuses share their search results. The apparatuses participating in the collaborative search are coordinated to perform different searches based at least in part on the battery power.

Description

Increase power by collaborative searching to save

Technical field

The application relates generally to communication, and more specifically, relates to the Cell searching technology for cell of origin in a wireless communication system.

Background technology

Wireless communication system is widely deployed to provide various types of Content of Communication (such as, voice-and-data).Typical wireless communication system can be can support the multi-address system with multiple telex network by sharing available system resource (such as, bandwidth sum transmitting power).The example of these multi-address systems can comprise code division multiple access (CDMA) system, time division multiple access (TDMA) system, frequency division multiple access (FDMA) system, OFDM (OFDMA) system etc.In addition, these systems can meet those specifications such as such as third generation partner program (3GPP), third generation partner program 2 (3GPP2), 3GPP Long Term Evolution (LTE), senior LTE (LTE-A).

Wireless communication system (such as, cellular communication system) allow subscriber equipment (UE) wirelessly to communicate by setting up wireless (such as, radio) link between subscriber equipment and one that is distributed in the multiple available base station (BS) of whole coverage or community on geographical position.As used herein, subscriber equipment is a wide in range term and can refers to individual equipment or multiple equipment.The agreement that mobility can make subscriber equipment be switched to the second base station from the first base station when being another overlay area by move to the second base station from the overlay area of the first base station when subscriber equipment provides.Various base station can be connected to the public land mobile network (PLMN) (such as, by wireless and/or wire link) of the necessary basis facility being provided for service call.The connection that PLMN has usually to PSTN (PSTN) does not have related wireline communication devices to make calling to be routed to PLMN.

Wideband Code Division Multiple Access (WCDMA) (WCDMA) system of 3GPP operates in the Wide-band CDMA Mobile Communication System had on the 5MHz channel of 200KHz channel grid.Exist and support WCDMA system and multiple communication bands (such as international mobile telecommunication-2000 (IMT-2000) frequency band and personal communication service (PCS) frequency band) of crossing over 60MHz bandwidth all on the uplink.

Usually, wireless multiple-access communication system can support the communication of multiple mobile device simultaneously.Each mobile device can communicate with one or more base station via transmission on a forward link and a reverse link.Forward link (or down link) refers to the communication link from base station to mobile device, and reverse link (or up link) refers to the communication link from mobile device to base station.

When power is supplied to subscriber equipment, subscriber equipment performs the downlink synchronization of base station and obtains the main scrambler (PSC) of base station.Usually this process is called Cell searching.Cell searching is a process, is obtained with the time of base station and the synchronous of frequency and the cell ID of base stations detected by this process subscriber equipment.Generally speaking, Cell searching can be categorized as search of initial zone or Target cell search, search of initial zone is performed at first when subscriber equipment (UE) powers on, and Target cell search performs when UE moves from community to community to switch or measurements of neighboring cells.

Subscriber equipment consumes relatively large amount of power consumption to perform Cell searching.When subscriber equipment starts cell search process, subscriber equipment at least will identify WCDMA channel, will determine boundary of time slot, determine frame boundaries, at least identify the PSC of base station and final identifying cells before beginning with base station communication.Because subscriber equipment can be powered on substantially in any place and the accuracy also alterable of the oscillator of subscriber equipment, so search of initial zone can relate to the search of the control channel to the community running through whole available radio frequency band.Such as, base station search can identify have for communications of user equipment for one or more base stations of best characteristics of signals, but this is also the task of a consumed power.Correspondingly, for determining that the method and apparatus of the improvement of the communication information of wireless mobile apparatus is desired.

Summary of the invention

The various realizations of the system in the scope of appended claim, method and apparatus all have some realizations, and which does not wherein have be shoulder desired character described herein individually.When not limiting the scope of appending claims, herein some notable features are described.

The details of one or more realizations of the theme described in this specification is illustrated in the the accompanying drawings and the following description.The further feature of specification, drawings and the claims, realization and advantage will be apparent.Please note that the relative size in accompanying drawing below may not described in proportion.

A realization of theme described in the present invention provides the first mobile device for wirelessly communicating with the second mobile device.Described first device comprises memory cell, and described memory cell is configured to store the communication information be associated with the communication carried out at least one channel of wireless network.Described first mobile device also comprises treatment system, and described treatment system is configured to: set up via the communication of communication link and described second mobile device, to obtain the described communication information and provide the described communication information at least partially to described second mobile device from described memory cell.

Another of theme described in the present invention realizes the method providing radio communication.Described method is performed by first user equipment to obtain the communication information be associated with the communication carried out at least one channel of wireless network.Described method also comprises the communication of setting up via communication link and the second subscriber equipment.Described method comprises in addition provides the described communication information at least partially via set up communication link to described second subscriber equipment.

Another of theme described in the present invention realizes providing the first mobile device for wirelessly communicating with the second mobile device.Described first mobile device comprises the unit of the communication information be associated for the communication obtained with carry out at least one channel of wireless network.Described first mobile device also comprises the unit for setting up the communication via communication link and described second mobile device.And described first mobile device also comprises the unit at least partially for providing described information to described second subscriber equipment via described communication link.

Accompanying drawing explanation

Fig. 1 shows the example of cordless communication network.

Fig. 2 shows the general block diagram can supporting the example of the wireless communication system of multiple subscriber equipment.

Fig. 3 shows the functional-block diagram of the example that subscriber equipment is described.

Fig. 4 shows the functional-block diagram of the example that multimode user equipment is described.

Fig. 5 depicts the functional-block diagram of the example that search engine front end is described.

Fig. 6 depicts the flow chart of the example that search engine is described.

Fig. 7 shows the block diagram of the example of the wireless communication system can supporting collaborative searching.

Fig. 8 shows another block diagram of the example of the wireless communication system can supporting collaborative searching.

Fig. 9 shows and can support to use resident subscriber equipment to carry out another block diagram of the example of the wireless communication system of cooperation cell search.

Figure 10 shows the example of the data structure of the shared information used in collaborative searching.

Figure 11 shows the flow chart of the example of the method for cooperation cell search.

Figure 12 shows the block diagram can supporting to carry out the example of the wireless communication system of cooperation cell search via cooperation cell search secondary server.

Figure 13 shows the flow chart of the example of the method for the cooperation cell search via cooperation cell search secondary server.

Figure 14 shows the block diagram of the example of the user interface of the subscriber equipment for cooperation cell search.

Figure 15 shows the flow chart of the example of the method for the radio communication for collaborative searching.

Figure 16 shows the flow chart of another example of the method for the radio communication for collaborative searching.

According to general custom, the various features shown in accompanying drawing may proportionally not drawn.Therefore, for clarity, the size of various feature can be arbitrarily expanded or reduce.In addition, the some accompanying drawings in accompanying drawing may not depicted to whole parts of fixed system, method or equipment.Finally, similar Reference numeral can be used represent and run through specification and the similar feature in accompanying drawing.

Embodiment

Below the various realizations of the embodiment in the scope of appended claim are described, which does not wherein have be shoulder desired characteristic described herein individually.It is evident that, realization described herein can be implemented with various forms widely, and those any concrete structures as herein described and/or function are only exemplary.Based on content disclosed herein, the personnel possessing ordinary skill it is appreciated that realization as herein described can independent of any other realization and be implemented, and these realize in two or more can be combined in every way.Such as, the realization of any amount explained can be used herein to come implement device and/or hands-on approach.In addition, can use except one or more realizations of explaining herein or from one or more other different structures and/or the functives of realizing explained herein to realize described device and/or to put into practice described method.

The details of one or more realizations of theme described in this specification is explained in the the accompanying drawings and the following description.According to specification, drawings and the claims, further feature, realization and advantage will be apparent.Please note that the relative size in accompanying drawing below may not described in proportion.

Word used herein " exemplary " one word means " as example, example or explanation ".Any realization being described to " exemplary " herein is not necessarily interpreted as comparing other and realizes preferred or have superiority.Propose description below, make any technical staff of this area can manufacture and use the present invention.For illustrative purposes, in the following description details is explained.In other example, be not described in detail to make optional details to carry out fuzzy description of the invention to the structure known and process.Thus, the present invention be not will limit by shown realization, but to conform to the maximum magnitude consistent with feature with principle disclosed herein.

Technology described herein can be used to various cordless communication network (such as, code division multiple access (CDMA) network, time division multiple access (TDMA) network, frequency division multiple access (FDMA) network, orthogonal FDMA (OFDMA) network, Single Carrier Frequency Division Multiple Access (SC-FDMA) network etc.).Often use term " system " and " network " interchangeably.Cdma network can realize the wireless technologys such as such as general land wireless access (UTRA), CDMA2000.UTRA comprises wideband CDMA (WCDMA) and low spreading rate (LCR).CDMA2000 covers IS-2000, IS-95 and IS-856 standard.TDMA network can realize the wireless technology of such as global system for mobile communications (GSM).OFDMA network can realize the such as wireless technology such as evolved UTRA (E-UTRA), IEEE 802.11, IEEE 802.16, IEEE802.20, Flash-OFDM.UTRA, E-UTRA and GSM are parts of Universal Mobile Telecommunications System (UMTS).Long Term Evolution (LTE) is the use of a released version of the UMTS of E-UTRA.In the document coming from " third generation partner program " (3GPP) by name tissue, UTRA, E-UTRA, GSM, UMTS and LTE are described.In the document coming from " third generation partner program 2 " (3GPP2) by name tissue, CDMA2000 is described.

Single-carrier frequency division multiple access (SC-FDMA) (employing single-carrier modulated and frequency domain equalization) is the technology used in wireless communication system.SC-FDMA has the performance similar with OFDMA system and substantially the same overall complexity.Due to the single carrier structure that SC-FDMA signal is intrinsic, SC-FDMA signal has lower peak-all power ratios (PAPR).SC-FDMA has caused great concern, and especially in uplink communication, wherein lower PAPR is greatly useful in the efficiency of transmitting power to mobile terminal.At present, this is the work imagine of the uplink multiple access scheme for 3GPP LTE or evolved UTRA.

In addition, in the following description, due to simple and clear and clearly reason, the term be associated with LTE Evolved Universal Terrestrial wireless access (E-UTRA) system can be used.In 3GPP TS 23.401:GPRS Enhancements for E-UTRAN Access (Release 8), LTE E-UTRA technology is further described.It is emphasized that realization described herein can be applicable to other technology (such as, relevant with WCDMA, TDMA, OFDMA, evolved high speed rate grouped data (eHRPD) etc. technology with associate standard) equally.The term alterable be associated with different technologies.Such as, depend on considered technology, the subscriber equipment used in LTE can be called as sometimes, only gives some instances, and mobile radio station, user terminal, subscriber equipment, accesses terminal.Similar, the gateway (SGW) used in LTE can be called as gateway, HRPD gateway etc. sometimes.Similar, the evolved node B (eNB) used in LTE can be called as access node, access point, base station, Node B, HRPD base station (BTS) etc. sometimes.It should be pointed out that as applicable at this, different term application is in different technology.

In addition, in the following description, due to simple and clear and clearly reason, the term be associated with eHRPD system can also be used.In 3GPP2X.P0057:E-UTRAN – eHRPD Connectivityand Interworking:Core Network Aspects, the realization be associated with the networking between E-UTRAN and eHRPD is further described.It is emphasized that as previously mentioned, realization described herein can be applicable to other technology equally.

Fig. 1 shows exemplary cordless communication network 100.Cordless communication network 100 is arranged to the communication be supported between multiple user or subscriber equipment.Cordless communication network 100 can be divided into one or more community 102 (such as, such as, community 102a-102g).Communication overlay in the 102a-102g of community can such as, be provided by one or more node 104 (such as, base station 104) (such as, node 104a-104g).Each node 104 can provide communication overlay to corresponding community 102.Node 104 can such as, carry out with multiple (AT) or subscriber equipment (such as, subscriber equipment 106a-106l) of accessing terminal alternately.

Subscriber equipment 106 can be the Wireless Telecom Equipment (such as, mobile phone, router, personal computer, server etc.) for sending and receive voice or data on a communication network used by user.Also subscriber equipment can be called herein access terminal, mobile radio station (MS) or terminal equipment.As shown, access terminal 106a, 106h and 106j comprises router.Subscriber equipment 106b-106g, 106i, 106k and 106l comprise mobile phone.But each in subscriber equipment 106a-106l can comprise any applicable communication equipment.

Each subscriber equipment 106 can communicate with one or more node 104 in the given time on forward link (FL) and/or reverse link (RL).Forward link is the communication link from base station to subscriber equipment.Reverse link is the communication link from subscriber equipment to base station.Also forward link can be called down link.In addition, also RL can be called up link.Base station 104 can be interconnective, such as, can be communicated each other by suitable wired or wireless interface.Accordingly, by one or more base station 104, each subscriber equipment 106 can communicate with another subscriber equipment 106.

Cordless communication network 100 may be provided in the service managed significantly on region.Such as, community 102a-102g only can cover several square kilometres in several block in community or rural environment.In one implementation, each community also can be further divided into one or more sectors (not shown in figure 1).

As mentioned above, base station 104 is provided to the access of another communication network (such as, such as the Internet or another cellular network) can to the subscriber equipment 106 in its overlay area.

Fig. 2 is another diagram of the exemplary wireless communications network 200 supporting at least two users.System 200 can be designed to support one or more CDMA standard and/or design (such as, WCDMA standard, IS-95 standard, CDMA2000 standard, HDR specification).For the sake of clarity, shown system 200 comprises three base stations 202a, 202b and 202c communicating with two subscriber equipment 204a with 204b.Although not shown in Figure 2, three base stations 202 can be interconnective and can be can communicate each other.Accordingly, each subscriber equipment 204 can communicate each other via one or more base station 202.

In one implementation, between subscriber equipment 204, direct communication link is not had.When subscriber equipment 204a wants to communicate with subscriber equipment 204b, the communication between these two subscriber equipmenies can be passed through at least one base station.Such as, subscriber equipment 204a can be synchronous with base station 202a and first register to base station 202a.After subscriber equipment 204a to register to base station 202a and becomes and to be associated with base station 202a, subscriber equipment 204a can with base station 202a exchange message.Same process is applicable to subscriber equipment 204b and base station 202b.After subscriber equipment 204b is associated with base station 202b, subscriber equipment 204a can communicate with subscriber equipment 204b via base station 202a with 202b.

Depend on realized wireless communication system, depend on whether subscriber equipment is in soft handover, each subscriber equipment 204 can communicate in any given time with (or may a multiple) base station 202 at least one forward link, and can communicate at least reverse link with one or more base station.As shown in Figure 2, subscriber equipment 204a can monitor the forward link coming from both base station 202a and 202b simultaneously.

Along with subscriber equipment moves through network, subscriber equipment may need to perform the switching from a part for the network using a kind of wireless access technology (RAT) to another part of the network of the another kind of RAT of use.Such as, as shown in Figure 2, subscriber equipment 204a can be arranged to another part (such as, base station 202b) from using the network (such as, base station 202a) of WCDMA wireless access technology to be converted to the network using CDMA2000 wireless access technology.Switching can refer to the process ongoing calling or data session being carried out from the channel being connected to network to one other channel shifting.Term " switching " also can be used to refer to cut out.When a handover is performed, subscriber equipment and the commutative various signaling of objective network and perform various operation to set up new session and to be configured the Traffic Channel for transmitting and receive data on objective network.It is preferred that service should not occur interrupting during switching.

Fig. 3 shows the example of the functional-block diagram of example wireless device 302.Wireless device 302 can be single mode and single RAT (such as WCDMA or CDMA2000) can be used to run.Wireless device 302 is the examples that can be arranged to the equipment realizing various method described herein.Wireless device 302 can realize the arbitrary equipment shown in Fig. 1 and Fig. 2.

Wireless device 302 can comprise the processor 304 of the operation controlling wireless device 302.Also processor 304 can be called CPU (CPU).Memory 306 (can comprise both read-only memory (ROM) and random access memory (RAM)) is coupled to processor 304 (that is, communicating with processor 304) and provides instruction and data to processor 304.A part for memory 306 also can comprise nonvolatile RAM (NVRAM).Processor 304 can come actuating logic and arithmetical operation based on the program command be stored in memory 306.Instruction in memory 306 can be executable, for realizing Method and Process described herein.

It can be maybe the parts for the treatment of system using one or more processor to realize that processor 304 can comprise.The parts that processor 304 and processor 304 can be coupled to the wireless device 302 of (such as, by bus system 322) are called treatment system.Use general purpose microprocessor, microcontroller, digital signal processor (DSP), field programmable gate array (FPGA), programmable logic device (PLD), controller, state machine, gate control logic, discrete hardware components, specialized hardware finite state machine maybe can perform the combination in any of any entity that other is applicable to of calculating or out of Memory process, one or more processor can be realized.

Treatment system also can comprise the machine readable medium for storing software.Software broadly should explain the instruction meaning any type, and no matter is called as software, firmware, middleware, microcode, hardware description language or alternate manner.Instruction can comprise code (such as, with the code of source code format, binary code form, executable code form or other applicable form arbitrarily).Instruction makes treatment system to perform various function described herein when executed by one or more processors.

Wireless device 302 also can comprise shell 308, and can comprise transmitter 310 and receiver 312 to allow transmission and the reception of data or instruction, such as, wirelessly and/or by many known interfaces.Transmitter 310 and receiver 312 can be combined into transceiver 314.In some implementations, single or multiple transmitting antenna can be attached to shell 308 and be electrically coupled to transceiver 314.Such as, when wireless device 302 is used to realize the base station 202 in base station 104a or Fig. 2 in subscriber equipment 106a or Fig. 1, wireless device 302 can comprise one or more antenna.Wireless device 302 also can comprise (unshowned) multiple transmitter, multiple receiver and/or multiple transceiver.

In some implementations, wireless device 302 also comprises the signal detector 318 that can be used to make great efforts the level detecting and quantize the signal received by transceiver 314.Signal detector 318 can detect signal as gross energy, every every subcarrier energy of symbol, power spectral density and so on and other signal.In some implementations, the signal quality parameter of channel can be monitored and/or detect to signal detector 318.

Wireless device 302 also can comprise the DSP 320 for using in processing signals.

The various parts of wireless device 302 can be coupled together by bus system 322, and bus system 322, except data/address bus, can comprise power bus, control signal bus and status signal bus in addition.Will be understood that as those people possessing ordinary skill, wireless device 302 can comprise other parts or element further.

Although described separately, it is appreciated that the element needing not be separate structure for the functional block described by wireless device 302.Such as, processor 304 and memory 306 can be implemented on a single chip.Processor 304 can be extra or optional, comprise memory (such as processor register).Same, the part of the function of one or more or various pieces in functional block can be implemented on a single chip.Optionally, the function of specific piece is implemented on two or more chip.

In this specification and appended claim, be noted that term " circuit " is interpreted as structural term instead of functional term.Such as, circuit can be the aggregate of circuit block (such as with process and/or the various integrated circuit components of memory component, unit, block etc. form, all as shown in Figure 3 and described).One or more combinations for the one or more functional block described by the equipment of any subscriber equipment 204 or the described herein or shown miscellaneous equipment of parts and/or functional block also can be implemented as the combination of computing equipment, such as, the combination of DSP and microprocessor, multi-microprocessor, with one or more microprocessor of DSP collaboration communication or other such structure any.

Fig. 4 shows the example of the functional-block diagram of exemplary multi-mode wireless device 402, and multimode wireless device 402 is realizations for any bimodulus shown in Fig. 1 and Fig. 2 or multimode user equipment.Wireless device 402 can be bimodulus and can be to use at least two different RAT (such as, WCDMA, CDMA2000, Wi-Fi and/or bluetooth) to run.Wireless device 402 is the examples that can be arranged to the equipment realizing various method described herein.Wireless device 402 can comprise the processor 404 of the operation controlling wireless device 402.Also processor 404 can be called CPU.Similar with the memory 306 in Fig. 3, memory 406 provides instruction and data to processor 404.Similar with the processor 304 in Fig. 3, processor 404 can comprise the parts of the treatment system utilizing one or more processor to realize or the treatment system using one or more processor to realize.Processor 404 can come actuating logic and arithmetical operation based on the program command be stored in memory 406.

Wireless device 402 also can comprise shell 408, and it can comprise at least two transceivers 410 and 412 to allow the transmission of data or instruction and reception (such as, wirelessly and/or by more than one known interface).In some implementations, two or more transmitting antennas 414 and 416 can be attached to shell 408 and be electrically coupled to transceiver 410 and 412.

In some implementations, wireless device 402 also comprises at least one signal detector 418, and signal detector 418 can be used to the level making great efforts to detect and quantize the signal received by transceiver 410 and 412.Signal detector 418 can detect signal as the energy, power spectral density and so on of gross energy, every every subcarrier of symbol and other signal.Wireless device 402 also can comprise the digital signal processor (DSP) 420 for using in processing signals.

The various parts of wireless device 402 can be coupled together by bus system 422, and bus system 422, except data/address bus, can comprise power bus, control signal bus and status signal bus in addition.Will be understood that as those people possessing ordinary skill, wireless device 402 can comprise other parts or element further.

Although described separately, it is appreciated that the element needing not be separate structure for the functional block described by wireless device 402.Such as, processor 404 and memory 406 can be implemented on a single chip.Processor 404 can be extra or optional, comprise memory (such as processor register).Same, the part of the function of one or more or various pieces in functional block can be implemented on a single chip.Optionally, the function of specific piece is implemented on two or more chip.

Fig. 5 depicts the exemplary realization of any subscriber equipment in Fig. 1 and Fig. 2.For the sake of clarity, shown in Fig. 5 is only the subset of the parts of subscriber equipment 106 or 204.Signal is received at antenna 502 place and is transferred to RF downconvert block 504 for amplification, down-conversion and sampling.Known in the art for CDMA signal being down-converted to the various technology of base band.I and Q sampling is transferred to searcher 506 from RF downconvert block 504.Please note that, in optional realization, I and Q sampling, before being transferred to searcher 506, can be stored in memory.Searcher 506 communicates with processing module 508.To adopting the replacement scheme of DSP to comprise, use be designed to perform with can in processing module 508 general processor of the another kind of type of the various tasks that adopted search is relevant or specialized hardware.Depend on the ability of searcher 506, processing module 508 can perform the various tasks below described in embodiment, and coordinates the performance of the residue task in searcher 506.Although illustrate only a searcher 506 in Fig. 5, according to the principle realized, the searcher of any amount can be realized concurrently herein.Can in searcher 506 below any point place in described process and device, calculate median for being transferred to processing module 508 for process subsequently.Treated median can be returned to the process that searcher 506 is used for subsequently equally by processing module 508.The various optional configuration of processing module or specialized hardware is for those skilled in the art will being clearly and falling within the scope of the present invention.

Fig. 6 depicts a flow chart realized of the operation of the search engine 508 illustrated in Fig. 5, and search engine 508 can be the realization of any subscriber equipment in Fig. 1 and Fig. 2.Three step process can be used to perform WCDMA search.At frame 602, Primary Synchronisation Code (PSC) (part of primary synchronization channel) searched for by subscriber equipment 106.In some implementations, PSC can be the sequence of 256 fixing chips, and it is transmitted during 256 initial chips of the time slot of each 2560 chip.For each community in system, PSC is identical.PSC is useful for the existence of base stations detected, and also just obtains time slot timing once obtain PSC.

At frame 604, the secondary synchronization code (SSC) of composition auxiliary synchronization channel searched for by subscriber equipment 106.There is the SSC of 16 256 chips.In 256 initial chips of each time slot, a SSC and PSC sends by each base station together (each in 16 SSC is orthogonal with PSC).15 SSC have 64 unique sequences, and each sequence is associated with in 64 scrambler groups.Each base station 104 in Fig. 1 sends a SSC sequence (every frame 15 SSCs) corresponding with the code character of the scrambler comprising that base station.Have selected one group of 64 SSC sequence, with the cyclic shift making neither one sequence be equal to any one cyclic shift in other sequence or it self any non-trivial (non-trivial).Due to this characteristic, once the SSC sequence be transmitted in any 15 continuous print time slots determined by subscriber equipment, this subscriber equipment just can determine frame timing and send in 64 SSC sequences which both, thus identify the scrambler group belonging to base station.Because have eight codes in each scrambler group, the quantity of candidate just can reduce to eight.

At frame 606, scrambler candidate (such as, eight) identified in step 2 604 can be searched for determine which is correct code concerning subscriber equipment 106.This realizes by performing to be correlated with, and any portion (multiple bit) of code candidate carries out energy accumulation until can make judgement.

Fig. 7 is the diagram of the realization of the wireless communication system 700 supporting cooperation cell search.System 700 is designed to support one or more CDMA standard and/or design (such as, WCDMA standard, IS-95 standard, CDMA2000 standard or HDR specification) and at least one optional communication technology, such as, and bluetooth or Wi-Fi.For the sake of clarity, shown system 700 comprises two base station 702a and 702b communicated with 704c with three subscriber equipmenies 704a, 704b.In addition, system 700 comprises the access point 706 communicated with two subscriber equipment 704b with 704c.Except access point 706, subscriber equipment 704b communicates with base station 702b.In one implementation, subscriber equipment 704a when not via when access point or base station with subscriber equipment 704c direct communication.Such as, when two subscriber equipment 704a and 704c all support peer-to-peer communications technology (such as, Wi-Fi direct (WFD) or bluetooth), subscriber equipment 704a can via peer to peer connection and the direct exchange message of subscriber equipment 704c.

In one implementation, subscriber equipment 704a, before specific wireless network is selected in trial, first determines wireless carrier or the wireless access technology (RAT) that will search for which kind of type.Make subscriber equipment 704a to select wireless network from base station 702a to the information that subscriber equipment 704a sends, and this information can be stored in one or more memories suitable in subscriber equipment 704a.Information can be sent on suitable broadcast channel by base station 702a, or selectively sends to subscriber equipment 704a, such as, at subscriber equipment 704a to during wireless network login.Make subscriber equipment 704a that the information sent of wireless network can be selected to comprise but might not wireless network identification be limited to, such as, the public land mobile network (PLMN) mark (ID) usually can broadcasted by each base station.Such sent PLMN ID and the PLMN ID be stored in the memory (memory 406 such as, in Fig. 4) of subscriber equipment can compare by some subscriber equipmenies.

Subscriber equipment 704a can comprise the one or more programmable processor or applicable logical block (processing module 508 in such as Fig. 5) that process the information be stored in one or more memory.Except out of Memory, the information stored can comprise the information relevant to the RAT of the community previously found and/or frequency arrangement, and processing module 508 is in search cell and select to use this information in PLMN.Should be realized, processing module 508 can comprise timer and be convenient to other parts of processing module operation.Transceiver circuit (transceiver 314 such as, in Fig. 3 or transceiver 414a or 414b in Fig. 4) provide control and the link of service signal between subscriber equipment 704a and base station 702a on reception and transmission.The transceiver circuit that at least one is suitable is provided in the 702b of base station.Transceiver can comprise frequency selective components, this frequency selective components runs and determines by subscriber equipment 704a for the used RAT that communicates with base station 702a under the control of processor (processor 304 such as, in Fig. 3 or the processor 404 in Fig. 4).Transceiver can generate the information through down-conversion and decoding, such as frequency correction burst and data symbol, and processor can use this information to determine current RAT and can carry out process information for different RAT.

In one implementation, the PLMN of the routine performed by subscriber equipment (subscriber equipment 106 such as, in Fig. 1 or the processor 304 in Fig. 3) selects or network selection procedures comprises the available PLMN of scanning, the available PLMN selecting a limit priority and search cell and the community of selection in selected PLMN.

Cell searching can comprise the whole frequency band and RAT supported by subscriber equipment.Such as, PCS1900 frequency band and WCDMA frequency band II have been assigned with identical uplink frequency (1850-1910MHz) and down-link frequencies (1930-1990MHz), and in some geographic areas, the part in these frequency bands is used to the other parts of gsm system and WCDMA system.This is illustrated by RSSI frequency diagram 708, this diagram depicts RSSI scanning (in arbitrary unit) on GSM or WCDMA system operation frequency spectrum wherein.Because have 300 possible frequency channels or absolute RF channel number (ARFCN) on the wide shared frequency band of 60MHz (such as shown by RSSI frequency diagram 708), so subscriber equipment (such as, subscriber equipment 106 in Fig. 1) a large amount of time and energy can be spent on the non-existent community of search, experience to thus battery life and user awareness and all bring obvious negative effect.

In another realizes, in order to identify WCDMA channel, whether subscriber equipment (any subscriber equipment 106 such as, in Fig. 1) can perform frequency scanning and calculate on available WCDMA channel has any one RSSI value to be greater than predetermined threshold.In some implementations, under the sight (when being activated on a user device when new cold start-up) of search of initial zone, this frequency scanning steps can take the about 500ms of subscriber equipment.As previously mentioned, after customer equipment identification goes out to have the WCDMA channel of satisfied RSSI value, before subscriber equipment finally identifies community and starts to communicate with it, subscriber equipment can start to perform three extra step search: (1) identifies time slot timing, and this can take subscriber equipment about 30ms in some implementations; (2) identify frame timing, this can take the extra 30ms of subscriber equipment in some implementations; And (3) identify the PSC of the community operated on identified WCDMA channel, this approximately can take the extra 5ms of subscriber equipment in some implementations.

The information of the list of the most accessed community can be stored in the database of subscriber equipment.Thus, next time, when first not carrying out frequency scanning, subscriber equipment can perform three step search as shown in Figure 6 at least some in the most accessed community once subscriber equipment powers up.But under some situations, the list of the most accessed community stored in user equipment database may be out-of-date and insecure.In some implementations, even if the WCDMA channel of subscriber equipment to some ARFCN performs frequency scanning and obtain good RSSI value, subscriber equipment still likely can find existing community.Thus, for subscriber equipment, just need full range to scan available WCDMA channel, carry out three step Cell searchings afterwards, and such cell search can consume a large amount of power.

In order to save search time and the energy of subscriber equipment, in one implementation, multiple subscriber equipment (any subscriber equipment 106 such as, in Fig. 1) is carried out coordinating to scan different channels and/or frequency band.After scanning different channels and/or frequency band, in order to save search time and energy (such as, the power of battery of UE), their Search Results is shared by the optional communication technology by the subscriber equipment of participation between these subscriber equipmenies participated in.In another realizes, undertaken coordinating to make each subscriber equipment all scan different frequency bands and/or sub-band by participating in multiple subscriber equipmenies of collaborative searching, each in different frequency bands and/or sub-band comprises at least one channel.In some implementations, the multiple subscriber equipmenies participating in collaborative searching are carried out coordinating to make to perform different search based on the battery life (or power) of subscriber equipment at least in part.Such as, when two subscriber equipmenies participate in collaborative searching, compare the subscriber equipment with more battery life surplus, the subscriber equipment with minimum battery life surplus can be assigned the task to perform less search.In another example, if three or more subscriber equipmenies participates in collaborative searching, then can based on the relative power of battery remaining in each subscriber equipment, determine the volumes of searches that will be performed by each subscriber equipment, with make to have at most can the subscriber equipment of the power of battery perform the volumes of searches needing most power.In some implementations, the battery power levels participating in each subscriber equipment of collaborative searching is determining which subscriber equipment is to perform a factor in which search, but also have other factor.In some implementations, one or more subscriber equipment and one or more communications of user equipment that other participates in and share the information comprising their battery power levels.In some implementations, unique user equipment can at least in part based on the information of battery life comprising subscriber equipment, coordinate that (or determine) take part in the participating user equipment of collaborative searching which will perform the specific part (such as, which frequency band and/or frequency) of collaborative searching.In some implementations, the power of battery of subscriber equipment (such as, some measurements in remaining remaining power life-span, such as, percentage or other indication information) be share between the subscriber equipment participating in search, and based on the battery life of one or more subscriber equipment, subscriber equipment is selected a part for collaborative searching to perform separately.Such as, the decision performing the search of which kind of type about specific subscriber equipment can be determined by the battery levels of one or more subscriber equipment and the public collaborative searching scheme that can be used by the subscriber equipment of the participation of all or part.Subscriber equipment can carry out further communication to coordinate this collaborative searching.Participate in the Search Results that them are shared by subscriber equipment that the subscriber equipment of collaborative searching can participate in other.In some implementations, when specific subscriber equipment completes a successful Cell searching, this subscriber equipment can share Search Results to reduce in Cell searching in the future their search time and energy with other subscriber equipment.

Fig. 8 shows the block diagram of the example of the wireless communication system 800 supporting cooperation cell search.System 800 can be designed to support one or more CDMA standard and/or design and the optional communication technology, such as bluetooth or Wi-Fi.For the sake of clarity, system 800 is shown as and only comprises base station 802 and three subscriber equipmenies 804a, 804b and 804c, and three subscriber equipmenies 804a, 804b and 804c start to carry out Cell searching near base station 802 or in the overlay area of base station 802 respectively.In addition, subscriber equipment 804a to communicate with subscriber equipment 804b via peer to peer connection 806a and communicates with subscriber equipment 804c via peer to peer connection 806c.Subscriber equipment 804b also can further be communicated with subscriber equipment 804c by peer link 806c.Peer to peer technology (such as bluetooth or WFD) can be used to realize three peer link 806a, 806b and 806c.

In one implementation, when subscriber equipment 804c to move in the overlay area of base station 802 and starts search of initial zone, subscriber equipment 804c sets up the connection via at least one in peer to peer connection 806b and/or 806c to subscriber equipment 804a or 804b.As noted, the ARFCN that existence 300 is possible in the frequency bandwidth that 60MHz is wide or general ARFCN (UARFCN).For subscriber equipment 804, the complete frequency scanning carried out all possible channel is very consuming time and consumed power.Therefore, after at least one connection in 806b or 806c is established, subscriber equipment 804c can consult to determine that each subscriber equipment 804 will to the joint agreement of the frequency scanning that different channels performs from connected equipment 804a and/or 804b.In another realizes, known information and subscriber equipment 804c are shared by least one in subscriber equipment 804a or 804b.This information shared can comprise previously through the position of the known RSSI value of the channel of scanning, PN position, known community ID, known PLMN ID and/or even known cell.PN position or PN skew identify the position of PN sequence for time or chip.

In another realizes, as the result of negotiation above-mentioned, subscriber equipment 804c performs frequency scanning to a frequency band (such as, IMT 2000 frequency band), and subscriber equipment 804b performs frequency scanning to different frequency bands (such as, PCS frequency band).In other words, each in subscriber equipment 804 can perform scanning to different frequency bands, and subsequently by result-sharing.

In another realizes, when identical frequency band supported by subscriber equipment 804, whole frequency band division can be multiple sub-band by these subscriber equipmenies 804, and each subscriber equipment 804 all performs frequency scanning respectively on respective sub-band after that.After subscriber equipment 804 completes their frequency scannings on subbands, they are by the result-sharing of their frequency scanning.This information shared can include but not limited to previously through the band of position and/or the even position of the known RSSI value of the channel of scanning, PN position, known community ID, known PLMN ID, known cell.

In some implementations, the Search Results shared comprise the information with the list of the channel of good RSSI value that any subscriber equipment 804 found.RSSI frequency diagram 708 in Fig. 7 shows the relation of RSSI and channel.

Fig. 9 shows the diagram of the example of the wireless communication system 900 supporting collaborative searching, and wherein collaborative searching supports resident subscriber equipment.System 900 is designed to support one or more CDMA standard and/or design and the optional communication technology, such as bluetooth or Wi-Fi.For the sake of clarity, system 900 is shown as and comprises base station 902 and two subscriber equipment 904a and 904b, and two subscriber equipment 904a with 904b communicate with base station 902 or in the overlay area of base station 902.In addition, subscriber equipment 904a is communicated with subscriber equipment 904b by peer to peer connection 906.In some implementations, P2P technology (such as bluetooth or WFD) can be used to realize peer to peer connection 906.

In one implementation, when subscriber equipment 904a successfully completes Cell searching and can reside in the covering of base station 902, the frequency of base station 902, PSC, PN position (or PN skew) and/or positional information and other subscriber equipment 904b are shared by subscriber equipment 904a.Thus, subscriber equipment 904b only can need perform the Cell searching reduced around base station 902.In another realizes, subscriber equipment 904b be tuned to by subscriber equipment 904a the frequency shared, use by subscriber equipment 904a the code shared and by subscriber equipment 904a despreading/descrambling the PN position of sharing.

Figure 10 show can in collaborative searching the example of the data structure 1030 of information shared.This data structure 1030 be in Fig. 8 in the information 808 shared and Fig. 9 the exemplary realization of information 908 shared.In some implementations, data structure 1030 is in response to the reciprocity assistance requests coming from subscriber equipment (subscriber equipment 804 such as, in Fig. 8 or the subscriber equipment 904 in Fig. 9) and is provided.Data structure 1030 can comprise unshowned extra configuration information in Figure 10 further, such as, and the head of lead code and/or data structure.Such as, head can comprise the timestamp of transmission, source address, destination address and/or sequence number.As should be understood that by those of ordinary skill in the art, data structure 1030 can comprise other parts or element further.

In example shown in Fig. 10, data structure 1030 comprises cooperation field 1002, and cooperation field has been described in detail the operation of the information be included in data structure 1030 or application, and such as Indication message is request message or response message.Such as, when the field 1002 that cooperates is set to " 1 ", this means that the information be included in the realization of data structure 1030 will share between the subscriber equipment (subscriber equipment 806a, 806b and 806c such as, in Fig. 8) participated in.Under these circumstances, can comprise information-source addresses field with indicate this information shared rise in which subscriber equipment.In another realizes, when the field 1002 that cooperates is set to " 2 ", this shows that the realization of data structure 1030 is the collaborative searching requests received from subscriber equipment (the subscriber equipment 904b such as, in Fig. 9).

The subset of data structure 1030 comprises channel field 1004, frequency band field 1006 and sub-band field 1008, can be described in detail with these to data structure 1030 corresponding to which frequency band and/or channel.Such as, frequency band field 1006 can operate on the frequency band of 2100 megahertzes (MHz) by equipment for indicating user 904a, this can show, such as, the transmit frequency range of subscriber equipment 904a is between 1920 and 1980MHz, and the receive frequency range of subscriber equipment is between 2110 and 2170MHz.Channel field 1004 can be used to be described in detail to the running frequency used by subscriber equipment 904a, and channel field 1004 can comprise the information about the channel number corresponding with running frequency.Channel number can be universal mobile telephone system land wireless access absolute RF channel number (UARFCN), such as, between channel 9612 and 9888.

RAT field 1010 can be used to be described in detail to RAT identifier, RAT identifier is to by subscriber equipment (such as, subscriber equipment 904a in Fig. 9) and/or base station (base station 902 such as, in Fig. 9) which kind of wireless access technology that uses be described.PSC field 1012, SSC field 1014 and/or community id field 1016 can be used for being described in detail to the base station communicated with it by subscriber equipment.Such as, PSC field 1012 describes the main scrambler used by base station 902 in detail, and SSC field 1014 describes the auxiliary scrambler used by base station 902 in detail, and community id field 1016 includes the cell identifier of base station 902.

PLMN field 1018 can be used to be described in detail to Mobile Country Code MCC (MCC) and/or Mobile Network Code (MNC), and the combination of Mobile Country Code MCC (MCC) and Mobile Network Code (MNC) can marked network operator uniquely.In some implementations, data structure 1013 can allow the data of PLMN field 1018 only comprise MCC information or only comprise MNC information, MCC and MNC can be transmitted respectively.Thus when not disclosing subscriber equipment and using which Virtual network operator, subscriber equipment can provide collaborative searching to assist to other subscriber equipment.

Data structure 1030 can comprise band of position field 1020 and/or location field 1022 further, location area code (LAC) can be described in detail use location area field 1020, can be described in detail in the geographical position (such as, coordinate) come base station 902 of use location field 1022.Thus, subscriber equipment can provide it self position to be effective for the information shared of collaborative searching request or designation data structure 1030 for specific position.

In addition, data structure 1030 can comprise time synchronisation field 1024 and/or PN location field 1026.Time synchronisation field 1024 can be used for specific base station (base station 902 such as, in Fig. 9) synchronous by subscriber equipment (the subscriber equipment 904a such as, in Fig. 9).Such as, time synchronisation field 1024 can comprise time slot timing and/or the frame timing of the base station 902 on the channel that operates in and identified by channel field 1016.PN location field 1026 can comprise in time with reference to the starting position of the pseudo noise sequence (PSC) of the base station of specific global time base.In one implementation, base station sends the pilot frequency sequence by pseudo noise sequence periodic code.Each subscriber equipment can be attempted obtaining this pseudo noise sequence starting position in time.Once subscriber equipment is aware of PSC and starting position, subscriber equipment can use this pseudo noise sequence to carry out despreading and/or descrambling.This realization can be applied to other communication system or standard equally, such as LTE.In the equity of collaborative searching auxiliary period, without the need to all providing all information to all data fields.Such as, partial information can gather together for collaborative searching by the subscriber equipment 804c receiving partial information from multiple subscriber equipment 804a and 804b.In another realizes, there is search secondary server and the partial information collected is gathered together from multiple subscriber equipment collecting part information.Thus, when the information of another user equipment requests about collaborative searching, this subscriber equipment can obtain relatively complete information.

Figure 11 shows the flow chart of the illustrative methods 1100 of the radio communication for the collaborative searching undertaken by subscriber equipment (the subscriber equipment 904b in subscriber equipment 804a or Fig. 9 such as, in Fig. 8).In order to start to carry out cooperation cell search, the set (frame 1102) of frequency band, sub-band and/or the channel will searched for it determined by subscriber equipment.In one implementation, the information of the set of frequency band, sub-band and/or channel is stored in memory (memory 406 such as, in Fig. 4) or is downloaded to subscriber equipment by artificial (user or operator) in advance.After frame 1102, subscriber equipment starts and other communications of user equipment that can be used for carrying out cooperation cell search (frame 1104).In one implementation, its collaborative searching request is broadcasted by peer-to-peer network (such as, via Bluetooth link) or local area network (LAN) (LAN) (such as, IEEE 802.11LAN) by subscriber equipment.At frame 1106, the Given information relevant to the set of frequency band, sub-band and/or the channel that will search for it is shared by the subscriber equipment of participation among each other.In one implementation, the information that subscriber equipment is correlated with from each subscriber equipment collection participated in, and information aggregate is used for together its use.After frame 1106, in decision frame 1108, whether subscriber equipment determination subscriber equipment has had for it for being synchronized to information enough base station.If subscriber equipment finds that it has acquired for it for skipping information enough Cell searching (determine frame 1108 outside " Yes " path), then can start to be synchronized to base station at frame 1114 subscriber equipment, based on the information that this subscriber equipment is known, subscriber equipment judges that this base station is uppermost in its base station search candidate list.

If subscriber equipment finds that it lacks the information (determining " No " path outside frame 1108) of some necessity, then subscriber equipment can proceed to frame 1110 and start to consult collaborative searching strategy with the subscriber equipment participated in.In frame 1110, what all subscriber equipmenies participated in can jointly determine that the subscriber equipment that participated in by each will search for it based on known consulting tactical is the subset of which frequency band, sub-band and/or channel.Each subscriber equipment participated in also can judge which or which cell search procedure completes for each channel concentrated, and which or which cell search procedure needs to be done.After negotiation in frame 1110, each subscriber equipment participated in can start the Cell searching simplified based on the information obtained in frame 1106.During the Cell searching simplified performed by the subscriber equipment participated in by each and/or afterwards, as in frame 1106, the information of searching sector that they find recently also can be shared by each subscriber equipment among each other.

Figure 12 shows the block diagram of the example of the wireless communication system 1200 cooperation cell can being supported to search for via cooperation cell search secondary server 1210a and 1210b.System 1200 can be implemented as supports one or more CDMA, UMTS or LTE standard and/or design and/or the optional communication technology (such as, bluetooth or Wi-Fi).For the sake of clarity, system 1200 is shown as and comprises three base stations 1202a, 1202b and 1202c, five subscriber equipmenies 1204a, 1204b, 1204c, 1204d and 1204e, an access point 1206 and two search secondary server 1210a and 1210b.Two search secondary server 1210a and 1210b, access point 1206, base station 1202b and subscriber equipment 1204e are connected to each other via communication interconnect 1212, and communication interconnect 1212 can be at least one in Internet interconnect, WAN interconnection, WLAN interconnection, lan interconnection, VPN interconnection, P2P interconnection etc.Thus, the various subscriber equipment that can carry out collaborative searching can utilize at least one search secondary server (such as, search secondary server 1210a with 1210b) pass through to share together with information via various communication interconnect, come collaborative searching base station.

In fig. 12, subscriber equipment 1204a is shown as and is connected to base station 1202a via wireless connections 1214.In one implementation, subscriber equipment 1204a has registered to base station 1202a and has resided in the overlay area of base station 1202a.In some implementations, subscriber equipment 1204a can be at least one in connection mode, activity pattern, sleep pattern, an inactive mode or park mode in communicating with base station 1202a.It is also shown that subscriber equipment 1204b is just at search base station (such as, base station 1202a) in Figure 12.Least for the burden reducing Cell searching, subscriber equipment 1204b starts to carry out collaborative searching via peer to peer connection 1216a and subscriber equipment 1204a.Example cooperative search assistance requests can comprise the realization of at least one subset of the data structure 1030 in Figure 10.Thus, the information relevant with neighbor base station (comprising base station 1202a) can be shared via peer to peer connection 1216a and subscriber equipment 1204b by subscriber equipment 1204a.In one implementation, base station 1202a has the connection to search secondary server 1210a.This connection can be at least one in the part in DCL or Internet interconnect.In another realizes, base station 1202a and search secondary server 1210a is coupled each other.Such as, searching for secondary server 1210a can be a part of base station 1202a or the function of base station 1202a.Thus, collaborative searching assistance requests can be forwarded to search secondary server 1210a from subscriber equipment 1204b via base station 1202a by subscriber equipment 1204a.Search secondary server 1210a, by information being sent it back to subscriber equipment 1204b, replys collaborative searching assistance requests.In another realizes, search secondary server 1210a Partial global planning search between subscriber equipment 1204b and other subscriber equipment participated in, this is not shown in Figure 12.

Or with reference to Figure 12, in some implementations, subscriber equipment 1204c is near the 1202b of base station and start to carry out cooperation cell search.Because subscriber equipment 1204c has extra RAT transceiver module (such as, the transceiver 410 or 412 in Fig. 4), therefore subscriber equipment 1204c can open and connect via connecting the RAT of 1216b to access point 1206.It can be that WLAN Wi-Fi connects or peer to peer connection that 1216b connects.On the other hand, access point 1206 has and is connected at least one in search secondary server 1210a with 1210b via interconnection 1212.Thus subscriber equipment 1204c can send collaborative searching assistance requests via access point 1206 in search secondary server 1210a and 1210b.Example cooperative search assistance requests can comprise the realization of at least one subset in the data structure 1030 in Figure 10.The mailing address of requested search secondary server can be downloaded in advance by Virtual network operator or user or be input to subscriber equipment 1204c.Accordingly, of searching in secondary server 1210a and 1210b can use the information of the neighbor base station around subscriber equipment 1204c to reply search assistance requests.

In fig. 12 it is also shown that subscriber equipment 1204d is near the 1202c of base station, and can start to carry out cooperation cell search.In addition, subscriber equipment 1202d can via connection 1216c (such as, bluetooth connects or Wi-Fi direct connects) communicate with subscriber equipment 1204e, and subscriber equipment 1204e can have and is connected at least one one that searches in secondary server 1210a with 1210b.In one implementation, subscriber equipment 1204e has some information of the neighbor base station around subscriber equipment 1204d.These information can come from the result of previous cooperation cell search performed by subscriber equipment 1204e or non-cooperating Cell searching.If subscriber equipment 1204e thinks that these information are useful to subscriber equipment 1204d, then these information can be directly transmitted to subscriber equipment 1204d via connection 1216c by subscriber equipment 1204e.In another realizes, collaborative searching assistance requests can be transmitted to one that searches for secondary server 1210a and 1210b from subscriber equipment 1204d via interconnection 1212 by subscriber equipment 1204e.Example cooperative search assistance requests can comprise the realization of at least one subset in the data structure 1030 in Figure 10.Accordingly, at least one of searching in secondary server 1210a with 1210b can use the information relevant with neighbor base station to make the reply to collaborative searching assistance requests to subscriber equipment 1204d.In a further implementation, at least one in search secondary server 1210a and 1210b is coordinated collaborative searching between subscriber equipment 1204d and other subscriber equipment participated in, and this is not shown in Figure 12.

Figure 13 shows for by subscriber equipment (such as, subscriber equipment 804b, 804a in Fig. 8, subscriber equipment 904b in Fig. 9, or any one in subscriber equipment 1204b, 1204c and 1204d in Figure 12) utilize search secondary server (search secondary server 1210a or 1210b such as, in Figure 12) to carry out the flow chart of another example of the method 1300 of the radio communication of collaborative searching.In order to start to carry out cooperation cell search, subscriber equipment needs the set (frame 1302) determining frequency band, sub-band and/or the channel that will search for it.In one implementation, the information of the set of frequency band, sub-band and/or channel is stored in memory (such as, the memory 406 in Fig. 4), or downloads to subscriber equipment in advance by artificial (user or operator).After frame 1302, subscriber equipment, in order to the information of its adjacent cell, starts to communicate (frame 1304) with search secondary server.In one implementation, subscriber equipment is connected to search secondary server via the optional communication technology (such as LAN, Wi-Fi LAN or wide area network (WAN)).In frame 1306, subscriber equipment can obtain the information relevant with the set of frequency band, sub-band and/or channel from search secondary server.Meanwhile, subscriber equipment there is the some information relevant with Cell searching and subscriber equipment also can with search secondary server share these information.In one implementation, search secondary server gathers the information relevant with Cell searching from the subscriber equipment of all participations, and by information aggregate in database.After frame 1306, in decision frame 1308, whether subscriber equipment determination subscriber equipment has for it for being synchronized to information enough base station.If subscriber equipment finds that it has acquired for it for skipping information enough Cell searching (determine frame 1308 outside " Yes " path), then subscriber equipment can start to be synchronized to base station, based on the information that this subscriber equipment is known, subscriber equipment judges that this base station is uppermost in its base station search candidate list.

If subscriber equipment finds that it lacks the information (determining " No " path outside frame 1308) of some necessity, then subscriber equipment can proceed to frame 1310 and start to consult collaborative searching strategy with the subscriber equipment participated in.In one implementation, this collaborative searching policy conferring has been come by search secondary server and subscriber equipment that each participates in.In frame 1310, each subscriber equipment participated in can know from the result of consulting that what will search for it is which subset of frequency band, sub-band and/or channel.Each subscriber equipment participated in also can judge to have completed which or which cell search procedure for each channel in set, and which or which cell search procedure needs to be done.After negotiation in frame 1310, each subscriber equipment participated in can start the Cell searching simplified based on the information obtained in frame 1312.During the Cell searching simplified performed by the subscriber equipment participated in by each and/or afterwards, as in frame 1306, the information of searching sector that they find recently also can be shared by each subscriber equipment participated among each other.

Figure 14 shows the block diagram of the example of the user interface 1400 of the subscriber equipment (any subscriber equipment 106 such as, in Fig. 1) supporting cooperation cell search.Figure 14 shows two examples, and the user interface of user interface 1400 realizes 1420A and 1420B.User interface realizes 1420A and has larger face 1402a, one front view region 1404a and three possible button 1412a, 1414a and 1416a.In the 1404a of front view region, there are three major parts: status bar 1406a, messagewindow 1408a and ACK button 1410a.Status bar 1406a shows the current state of subscriber equipment, the such as state of power rating, the state of network connected, the communication interface of subscriber equipment.Messagewindow 1408a shows and can be used for starting the subscriber equipment of collaborative searching and/or the list of search secondary server for subscriber equipment.In some implementations, for the selection indicated by user, each subscriber equipment participated in list or each search secondary server can be highlighted.ACK button 1410a is used to the selection confirming user.After user confirms to select, subscriber equipment can send collaborative searching request to the highlighted subscriber equipment on messagewindow 1408a or search secondary server.

To realize 1420A similar with user interface, and user interface realizes 1420B and has larger face 1402b, one front view region 1404b and three possible button 1412b, 1414b and 1416b.In the 1404b of front view region, there are three major parts: status bar 1406b, messagewindow 1408b and ACK button 1410b.Status bar 1406b shows the current state of subscriber equipment, the such as state of power rating, the state of network connected, the communication interface of subscriber equipment.Messagewindow 1408b display sends the subscriber equipment of collaborative searching and/or the list of search secondary server to subscriber equipment.In one implementation, for the selection indicated by user, each subscriber equipment participated in list or each search secondary server can be highlighted.ACK button 1410b is used to the selection confirming user.After user confirms to select, subscriber equipment can accept the collaborative searching request sent from the highlighted subscriber equipment on messagewindow 1408b or search secondary server.

Figure 15 shows the flow chart of another example of the method 1500 of the radio communication for cooperation cell search.Method can be performed by the subscriber equipment 904a in such as Fig. 9.At frame 1502, customer equipment identification goes out desired channel.Unit for identifying channel can comprise at least one processing module 508.The channel identified can comprise at least one in frequency, frequency band, sub-band and channel number.At frame 1502, customer equipment identification goes out the synchronizing information of base station (such as, base station 902).Unit for identifying the synchronizing information of base station can comprise at least one in processing module (processing module 508 such as, in Fig. 5) and searcher (searcher 506 such as, in Fig. 5).The synchronizing information of base station can comprise at least one in symbol clocking information, time slot clocking information, frame timing information, PSC or SSC.Subscriber equipment can use the synchronizing information of base station to reduce the lock in time to base station.At frame 1404, the data of collaborative searching information and another subscriber equipment (the subscriber equipment 904b such as, in Fig. 9) are shared by subscriber equipment.Unit for shared collaboration search information can comprise transceiver (transceiver 412 such as, in Fig. 4).Subscriber equipment is by peer to peer connection and another collaborative share information.

Figure 16 is the flow chart of another illustrative methods 1600 of radio communication for collaborative searching.Method can be performed by the subscriber equipment 904b in such as Fig. 9.At frame 1602, subscriber equipment obtains the information of at least one channel from the second subscriber equipment (the subscriber equipment 904a such as, in Fig. 9).Unit for the information obtaining at least one channel from the second subscriber equipment can comprise receiver (receiver 312 such as, in Fig. 3) and processor (processor 304 such as, in Fig. 3).The information of channel can comprise at least one in the frequency of channel, frequency band, sub-band, channel number, PSC or SSC information.At frame 1604, subscriber equipment detects at least one channel, to form the list of monitored channel based on the information obtained.Unit for detecting at least one channel based on the information obtained can comprise at least one in processing module (processing module 508 such as, in Fig. 5) and searcher (searcher 506 such as, in Fig. 5).Subscriber equipment can use the information of acquisition to form the list of monitored channel.Subscriber equipment can form the synchronizing information of each monitored channel further.At frame 1506, at least one in the information of at least subset of the described list of monitored channel and the second subscriber equipment and the 3rd subscriber equipment (subscriber equipment 804 such as, in Fig. 8) is shared by subscriber equipment.Unit for shared information can comprise transceiver (transceiver 412 such as, in Fig. 4).Subscriber equipment can be passed through peer to peer connection and information and another subscriber equipment is shared.

Should be understood that, using such as " first ", " second " etc. title to quote element any is not herein limit the quantity of these elements or order usually.But, use these to be referred to as between two or more element herein or between the Multi-instance of element, carry out the facilitated method distinguished.Thus, quoting and not meaning that employing two elements or the first element must in some way prior to the second elements only in there the first and second elements.In addition, be illustrated unless otherwise, otherwise a group element can comprise one or more element.

Those of ordinary skill in the art should be understood that, any various different technique and technology can be used to represent information and signal.Such as, data that specification is above cited, instruction, order, information, signal, bit, symbol and chip can be run through, can be represented by voltage, electric current, electromagnetic wave, magnetic field or magnetic particle, light field or light particle or their combination in any.

Those of ordinary skill in the art should it is further appreciated that, electronic hardware can be implemented as (such as in conjunction with various exemplary logical block, module, processor, unit, circuit and algorithm steps described in realization disclosed herein, the Digital Implementation that message sink coding or some other technology can be used to design, simulated implementation or the combination of the two), various forms of be incorporated to instruction program or design code (conveniently, can be described as herein " software " or " software module "), or the combination of the two.In order to clearly explain this interchangeability of hardware and software, various exemplary parts, block, module, circuit and step are described from their functional perspective above usually.Hardware is embodied as or software depends on the design constraint specifically applied and be applied on total system as function.Technical staff can realize described function in various ways for each specific application, but this realization determines should not be interpreted as making to have departed from scope of the present invention.

Be implemented in integrated circuit (IC) in conjunction with various exemplary logical block, module and circuit described by embodiment disclosed herein and composition graphs 1 to Figure 12, access terminal or within access point, or by integrated circuit (IC), to access terminal or access point performs.IC can comprise be designed to perform function described herein general processor, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, electric parts, light parts, mechanical part or their combination in any, and can perform and be present in IC, be present in outer or the two the code of IC or instruction.Logical block, module and circuit can comprise antenna and/or transceiver with network in or various component communications in equipment.General processor can be microprocessor, and optionally, and this processor can be the processor of any routine, controller, microcontroller or state machine.Processor also can be implemented as the combination of computing equipment, such as, and the combination of DSP and microprocessor, multi-microprocessor, the one or more microprocessor be combined with DSP core or other such structure any.The function of module can be implemented in other mode of as taught herein some.Function described herein can in some implementations with being called as similarly in appending claims " for ... unit " function corresponding.

Should be understood that, any concrete order of the step in any disclosed process or level are examples of example method.According to design preference, it should be understood that while maintenance within the scope of the present invention, concrete order or the level of the step in process can be rearranged.Appended claim to a method proposes the key element in various step with exemplary order, and and do not mean that and will be limited to proposed concrete order or level.

To the various amendments of realization described in the present invention, can be very apparent for those skilled in the art, and rule without departing from the spirit or scope of the present invention, defined herein can be applied in other realization.Thus the present invention will be limited to realization shown in this article, but will meet the maximum magnitude consistent with claim disclosed herein, principle and novel features.The word " exemplary " that exclusiveness uses herein means " as example, example or example ".Any realization being described to " exemplary " herein is not necessarily interpreted as relative other and realizes preferred or have superiority.

Also realization can be combined in single realization with point special characteristic that other context realized describes in this manual.On the contrary, the various features be described with the context of single realization also can be realized respectively or in any suitable time combination in multiple realization.In addition, although feature can be described to act on specific combination and even initial so statement hereinbefore, the one or more features coming from stated combination can be deleted from combination in some cases, and the combination stated can be the distortion for secondary combination or secondary combination.

Same, although describe operation with specific order in accompanying drawing, but this is not appreciated that and requires that such operation is performed with shown specific order or continuous print order, or those all operations be illustrated all will be performed the result reaching expectation.Under particular circumstances, multitask and parallel processing can have superiority.In addition, the separation of the various system units in realization as described above is not appreciated that and requires to be separated all like this in all realizations, but should be understood to described program element and system can usually by together be merged into single software product or encapsulate in multiple software product.In addition, other realization be claim below scope in.In some cases, the action described in enforcement of rights requirement can be carried out by different orders and still can reach the result of expectation.

Claims

1. first mobile device for wirelessly communicating with the second mobile device, comprising:

Memory cell, is configured to store the communication information be associated with the communication carried out at least one channel of wireless network; And

Treatment system, described memory cell is coupled in described treatment system operation and is configured to:

Set up the communication via communication link and described second mobile device;

The described communication information is obtained from described memory cell; And

The described communication information is provided at least partially to described second mobile device.

2. the first mobile device as claimed in claim 1, wherein, described communication link is peer-to-peer communication link, and wherein, and described first mobile device to provide described in the described communication information at least partially via described peer-to-peer communication link to described second mobile device.

3. the first mobile device as claimed in claim 1, wherein, described communication link is established via at least one access point, and wherein, and described first mobile device to provide described in the described communication information at least partially via at least one access point described to described second mobile device.

4. the first mobile device as claimed in claim 1, wherein, the described communication information comprises the synchronizing information of at least one base station operated at least one channel described, and wherein, described treatment system is further configured to provides described synchronizing information at least partially to described second mobile device.

5. the first mobile device as claimed in claim 1, wherein, the described communication information of at least one channel described comprises at least one item in the following: symbol clocking information, time slot clocking information, the battery levels of at least one subscriber equipment, frame timing information, operate in the main scrambler of at least one base station at least one channel described or auxiliary scrambler, and wherein, described treatment system be further configured to described second mobile device provide in the following described at least one at least partially: described symbol clocking information, described time slot clocking information, the battery levels of at least one subscriber equipment described, described frame timing information, described main scrambler or described auxiliary scrambler.

6. the first mobile device as claimed in claim 1, wherein, the described communication information comprises the list of one or more channels with the RSSI value being greater than threshold value.

7. the first mobile device as claimed in claim 1, wherein, the described communication information comprises the positional information of at least one base station, and wherein, described treatment system is further configured to provides the described positional information of at least one base station described at least partially to described second mobile device.

8. the first mobile device as claimed in claim 1, wherein, the described communication information comprises the PN positional information of at least one base station, and wherein, described treatment system is further configured to provides the described PN positional information of at least one base station described at least partially to described second mobile device.

9. the first mobile device as claimed in claim 1, also comprises channel search module, and described channel search module operation is coupled to described treatment system, and wherein said treatment system is further configured to:

Receive at least one collaborative searching request via described communication link from described second mobile device, described collaborative searching request identifies another part of the described information of at least one channel described;

Described another part of described information is searched for via channel search module; And

Described another part of described information is provided to described second mobile device via described communication link.

10. the first mobile device as claimed in claim 9, wherein, described another part of described information comprises the synchronizing information of at least one base station operated at least one channel described, and wherein, described treatment system is further configured to via described channel search module to search for described synchronizing information.

11. first mobile devices as claimed in claim 9, wherein, described another part of the described information of at least one channel described comprises at least one item in the following: symbol clocking information, time slot clocking information, frame timing information, operate in the main scrambler of at least one base station at least one channel described or auxiliary scrambler, and wherein, described treatment system to be further configured to via described channel search module to search for the described at least one item in the following: described symbol clocking information, described time slot clocking information, described frame timing information, described main scrambler or described auxiliary scrambler.

12. first mobile devices as claimed in claim 9, wherein, described another part of described information comprises the list of one or more channels with the RSSI value being greater than threshold value, and wherein, described treatment system is further configured to the described list of searching for described one or more channel with good RSSI value via described channel search module.

13. first mobile devices as claimed in claim 9, wherein, described another part of described information comprises the positional information of at least one base station, and wherein, described treatment system is further configured to the described positional information of searching at least one base station described via described channel search module.

14. first mobile devices as claimed in claim 9, wherein, described another part of described information comprises the PN positional information of at least one base station, and wherein, described treatment system is further configured to the described PN positional information of searching at least one base station described via described channel search module.

15. first mobile devices as claimed in claim 1, wherein, described treatment system is further configured to:

Receive at least one collaborative searching request via another communication link from one or more mobile device, at least one collaborative searching request described identifies another part of the described information of described wireless network; And

Determine the communication information that described first mobile device will be searched for;

Determine the communication information that described other mobile device one or more will be searched for, and described information is sent to described other mobile device one or more;

Determine the communication information of described wireless network;

The determined communication information is provided at least partially to described one or more mobile device; And

The communication information of described wireless network is received from described one or more mobile device.

16. first mobile devices as claimed in claim 15, wherein, determine that information that described first mobile device and described one or more mobile device will be searched for is at least in part based on the battery power levels information of at least one in described one or more mobile device or described first mobile device.

17. first mobile devices as claimed in claim 1, wherein, described treatment system is further configured to and sends collaborative searching request to the 3rd device, and described collaborative searching request comprises another part of the described information of at least one channel described.

18. first mobile devices as claimed in claim 17, wherein, described collaborative searching request comprises the battery power levels information of described one or more mobile device.

19. first mobile devices as claimed in claim 1, wherein, the described communication information comprises the battery power levels information of at least one in described first mobile device or described second mobile device.

The method of 20. 1 kinds of radio communications, described method is performed by first user equipment, comprising:

Obtain the communication information be associated with the communication carried out at least one channel of wireless network;

Set up the communication via communication link and the second subscriber equipment; And

The described communication information is provided at least partially to described second subscriber equipment via set up communication link.

21. methods as claimed in claim 20, wherein, set up described communication and comprise the described communication of setting up via peer-to-peer communication link and described second subscriber equipment further.

22. methods as claimed in claim 20, wherein, set up described communication and comprise the described communication of setting up via at least one access point and described second subscriber equipment further.

23. methods as claimed in claim 20, wherein, obtain the described communication information and comprise the synchronizing information obtaining at least one base station operated at least one channel described further.

24. methods as claimed in claim 20, wherein, obtain the described communication information and comprise at least one item obtained in the following further: symbol clocking information, time slot clocking information, frame timing information, the main scrambler operating at least one base station at least one channel described or auxiliary scrambler.

25. methods as claimed in claim 20, wherein, obtain the described communication information and comprise the RSSI information obtaining at least one base station operated at least one channel described further.

26. methods as claimed in claim 20, wherein, obtain the described communication information and comprise the positional information obtaining at least one base station operated at least one channel described further.

27. methods as claimed in claim 20, wherein, obtain the described communication information and comprise the PN positional information obtaining at least one base station operated at least one channel described further.

28. methods as claimed in claim 20, also comprise:

Receive at least one collaborative searching request via described communication link from described second subscriber equipment, at least one collaborative searching request described identifies another part of at least one channel described;

Described another part of described information is provided to described second subscriber equipment.

29. methods as claimed in claim 28, wherein, the described another part searching for described information comprises the synchronizing information that mark operates at least one base station at least one channel described further.

30. methods as claimed in claim 28, wherein, the described another part searching for described information comprises at least one item identified in the following further: symbol clocking information, time slot clocking information, frame timing information, the main scrambler operating at least one base station at least one channel described or auxiliary scrambler.

31. methods as claimed in claim 28, wherein, the described another part searching for described information comprises the RSSI information that mark operates at least one base station at least one channel described further.

32. methods as claimed in claim 28, wherein, the described another part searching for described information comprises the positional information that mark operates at least one base station at least one channel described further.

33. methods as claimed in claim 20, also comprise:

Receive at least one collaborative searching request via another communication link from the 3rd subscriber equipment, at least one collaborative searching request described identifies another part of the information of at least one channel described; And

34. methods as claimed in claim 33, wherein, receive at least one collaborative searching request described to comprise and receive at least one collaborative searching request described based on the battery power levels information of at least one in described first user equipment, described second subscriber equipment or described 3rd subscriber equipment at least in part.

35. methods as claimed in claim 20, also comprise:

Send collaborative searching request to the 3rd subscriber equipment, described collaborative searching request comprises another part of the described information of at least one channel described.

36. methods as claimed in claim 35, wherein, send described collaborative searching request to comprise and send described collaborative searching request based on the battery power levels information of at least one in described first user equipment, described second subscriber equipment or described 3rd subscriber equipment at least in part.

37. methods as claimed in claim 20, wherein, obtain the described communication information and comprise the battery power levels information obtaining described first user equipment or described second subscriber equipment further, and wherein, described method also comprise:

At least in part based on the battery power levels information of described first user equipment and described second subscriber equipment, determine the part of the collaborative searching that described first user equipment and described second subscriber equipment will perform.

38. 1 kinds of first mobile devices for wirelessly communicating with the second mobile device, described first mobile device comprises:

For the unit of the communication information that the communication obtained with carry out at least one channel of wireless network is associated;

For setting up the unit of the communication via communication link and described second mobile device; And

For providing the unit at least partially of described information to described second subscriber equipment via described communication link.

39. first mobile devices as claimed in claim 38, also comprise:

For receiving the unit of at least one collaborative searching request from described second subscriber equipment via described communication link, another part of described at least one collaborative searching request mark at least one channel described; And

For searching for the unit of described another part of described information via channel search module.

40. first mobile devices as claimed in claim 38, also comprise:

For receiving the unit of at least one collaborative searching request from the 3rd subscriber equipment via another communication link, another part of the information of described at least one collaborative searching request mark at least one channel described; And

For providing the unit of described another part of described information to described second subscriber equipment.